PHYSICS chapter 13.3, 13.4
Pigments ________________, or subtract, colors from incoming light
absorb
The color of an object is determined by which wavelengths are _________ and which are reflected
absorbed
We can also create white light by combining the three _____________ : red, green, and blue
additive primary colors
Objects ______ certain wavelengths of the incoming light and ______ the rest
adsorb ; reflect
If the leaf was illuminated by a red light, the leaf would appear ___________ because there would not be any green light for the leaf to reflect
black
equal mixing of the three pigments produces ______
black (sort of)
Light rays from an object that are ________ the principle axis pass through the image point
close (near)
Two additive primary colors combine to produce the _________________ color of the third primary color
complementary
_______________- an inwardly curved, mirrored surface that is a portion of a sphere and that converges incoming light (inner surface of the sphere)
concave spherical mirror
Light rays from the bulb reflect from the mirror and ____________ (reflect towards one another)
converse
_______________________ - an outwardly curved, mirrored surface that is portion of a sphere and that diverges incoming rays (outer surface of the sphere)
convex mirror
The primary pigments, or primary subtractive colors, are ____ , _____ , ______
cyan ; magenta ; yellow
a convex mirror is also called a ______ mirror because the reflected rays diverge from one another
diverging
Refracting telescopes are another type of telescope that use a combination of lenses to focus incoming ______waves
electromagnetic
Spherical aberration can be ______ by using a parabolic mirror
eliminated
Light rays from an object that are _____ from the principle axis do not pass through the image point, producing a blurred image
far
When light rays parallel to the principal axis converge at a single point called the ______ point, F
focal
The distance between F and the mirror is called the _________, ƒ
focal length
When the object is at the______, the image is infinitely far to the left and is not seen
focal length
parabolic mirrors: No matter the distance from the principle axis incoming parallel rays are reflected through the ______
focal point
in a convex mirror the ______ and the ______ of the curvature are situated behind the mirrors surface
focal point and center
Because the reflected rays actually pass through the image point, the image is in _____ of the mirror and can be captured on a physical object such as a screen
front
If an image is larger than an object, the magnitude of its magnification is ____________ than one
greater
The leaf appears ______ because ONLY the wavelengths that produce green light are reflected
green
F is located ______ between the C (center) and the mirror
halfway
The image is __________ and below the principal axis
inverted
where are parabolic mirrors used in?
large telescopes and flashlights
Images for objects close to the mirror are ____________ than the object
larger
If an image is smaller than an object, the magnitude of its magnification is ________ than one
less
A _____ is placed upright at a distance p from a concave spherical mirror
light bulb
_______ is always less than one (image is smaller than the object)
magnification
__________________, - the ratio of the height of the image to the object height
magnification
the image location can be determined with the ______ equation
mirror
A _____________ Magification indicates that the image is upside down with respect to the object, or inverted
negative
The back side of the mirror, which is usually the right side in ray diagrams, is the ______ side
negative
in a convex spherical mirror the focal length is always ______
negative
Reflecting telescopes use _______ mirrors to focus incoming electromagnetic waves at a single point
parabolic
_______________ - the alignment of electromagnetic waves in such a way that the vibrations of the electric fields in each of the waves are parallel to one another
polarization
A _____________ Magnification indicates that the image is upright with respect to the object
positive
In a concave spherical mirror the focal length is always ____________
positive
The front side of the mirror, which is usually the left side in ray diagrams, is the _____ side
positive
in a concave spherical mirror the object is always located on the front side of the mirror, thus p is always ____________
positive
image is ______ when in front of the mirror and POSITIVE
real
in a concave spherical mirror the image may either be ______ or ______
real ; virtual
When the object is at a distance greater than the focal length, the image is _____ and _____
real and inverted
________________ - an image formed when rays of light actually intersect at a single point
real image
The cone cells in our eyes detect either _____, _____, _____, and through the combination of these three colors we are able to see a wide range of colors
red, green, or blue
Spherical aberration can be __________ by using a small spherical mirror because the incoming rays can never be far from the principle axis
reduced
The _______ rays meet at some distance q in front of the mirror to form the image point
reflected
All forms of electromagnetic waves obey the laws of ____
reflection
We are able to see objects because light ______ off of those objects, but objects are not like mirrors
reflects
Remember that for an electromagnetic wave, the electric field and the magnetic field are at _________ angles with respect to one another
right
It is possible to orient light waves so that all of the electric fields oscillate in the ______ direction
same
The wavelengths of the light ______________ the object also affect the color of the object
shinning on
____ Indicates the type of image that is formed
sign of magnification
The radius of curvature, R, of the mirror determines image _______ and ____________
size and orientation
Images for objects far from the mirror are ________ and _______________________
smaller ; upside down
The additive primary colors can be combined in various ways to produce all of the colors of the _____
spectrum
This effect is called __________ and is present in any spherical mirror
spherical aberration
Remember that the mirror is a small part of a _______, which has a center of curvature, C. The _______ of curvature is the distance between the center of curvature, C, and the mirror
spherical shell ; radius
Two additive primary colors combine to produce a ______________ primary color
subtractive
______ produce a color image by combining pixels of the additive primary colors
television sets
Objects do not ___________ reflect ____ wavelengths of incoming light
uniformally ; all
magnification is a ______ quantity
unitless
Light from a typical source consists of waves that have electric fields oscillating in different directions. This light is said to be _______________
unpolarized
In a convex mirror the image is always _______________ (q is negative)
virtual
image is ______ when behind the mirror and NEGATIVE
virtual
When the object is between the focal point and the mirror, the image is _____ and ______
virtual and upright
in a convex mirror a ____, _____ image forms where the three rays appear to intersect
virtual upright
white light is composed of the colors of the ____________. we know this because we can ______ light into the elementary colors with a prism
visible spectrum ; separate
once separated by a prism we can create ______ light by passing the separated colors through another prism
white
Combining pigments is not like combining lights. Blue light and yellow light combine to produce ____________ light. Blue pigment and yellow pigment combine to produce ______ pigment
white ; black